General Relativity

Posts on Einstein's general theory of relativity, both from the physical and mathematical points of views.

We introduce the Kodama vector field for rotationally symmetric space-times and its relation to gravitational red-shift.

We explain how to conformally compactify Lorentzian manifolds.

My PhD Thesis on characterization and conditional uniqueness of the Kerr-Newman solution in general relativity.

Lecture notes on a fake derivation of the Kerr metric from the Schwarzschild metric, based on lots of hindsight.